Omron 3G3MX2 User Manual page 390

7-2 Troubleshooting
Parameters cannot
be changed.
Motor turns in
reverse.
The motor turns in
reverse when
operation is started
with the RUN key.
An Overcurrent
Trip (E03) occurs
during operation.
7
The STOP/RESET
key does not work.
7-13
Condition Possible cause
The Inverter is running.
Soft lock is effective.
The phase order of motor
wiring is incorrect. (The
specification of motor
phase order is such that U/
T1, V/T2, W/T3 does not
indicate forward rotation).
The forward/reverse logic
is incorrect when the 3-wire
input function is used.
RUN Direction Selection
(F004) is incorrect.
The acceleration time is
too short.
The load is excessive.
Overload Limit Selection
(b021/b024) is set to "00:
Disabled".
[An overcurrent trip occurs during operation, even when the overload limit is
enabled]
Overload Limit Level
(b022/b025) is high.
Overload Limit Parameter
(b023/b026) is short.
The STOP/RESET key is
disabled by setting.
Overvoltage Suppression
Function During Deceleration
(b130) is enabled.
Controlled Deceleration
on Power Loss (b050) is
enabled.
Remedial actions
Stop the Inverter and wait for the motor to
decelerate to a stop, and then set again. When
the mode is set to "Data can be changed
during RUN" (b031 = 10), some parameters
can be changed even during operation.
Disable Soft Lock Selection (b031).
Reverse two of U/T1, V/T2 and W/T3 or
adjust the motor phases to the correct
order.
Check the "22: F/R (3-wire forward/
reverse)" logic of the applicable multi-
function input terminal.
Change the setting of RUN Direction
Selection (F004).
Extend the Acceleration Time (F002/F202/
A092/A292).
Change the operation pattern to one in
which acceleration is temporarily stopped
using the acceleration hold function.
Reduce the load.
Perform tuning using the torque boost
function.
Set Control Method (A044/A244) to "02:
Free V/f setting" and perform tuning.
Enable Overload Limit Selection (b021/
b024).
Lower the Overload Limit Level (b022/
b025).
Extend the Overload Limit Parameter
(b023/b026).
Set STOP Key Selection (b087) correctly.
Set Overvoltage Suppression Function
During Deceleration (b130) to "00:
Disabled" or adjust the operation level of
each function.
Set Controlled Deceleration on Power
Loss (b050) to "00: Disabled" or adjust the
operating level of each function.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
Reference
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